Rebuilt, repaired or reground elements are balanced at operating speeds
Precise simulation of in-plant operating conditions
PRG offers dynamic balancing for all rolls, rotors and drums. Our Schenck Horizontal Dynamic Balancing Machine
(hard-bearing with permanent calibration) enables the precise simulation of in-plant operating conditions and
provides the opportunity to make fine-tuning adjustments to units prior to shipment from our plants.
Our dynamic balancing is done in accordance with ISO 1940/1 and ANSI S2.19 standards. We are able to balance
any grade between G.1 and G.6.
PRG's Dynamic Balancing
Rotor Mass Limitations
Weight range for rotors in their own bearings,
mounted directly on the dynamometer:
400 - 160,000 lbs.
Rotor weight x speed (Wn2) for H80
Dynamometer not to exceed:
8880 x 106 lb/min2
Rotor polar moment of inertia x speed (Wk2n2)
not to exceed:
20,000 x 106 lb-ft2/min2
The (Wk2)n2 value is based on a 75 hp DC motor.
Instrumentation speed range:
120 - 3300 rpm
Maximum permissible roller speed:
6000 rpm
Rotor Dimensions:
Max. distance between support bearing centerlines:
Min. distance between support bearing centerlines:
555 inches
16 inches
Drive to Workpiece
Balancing speed over a 10" driven diameter based
on 1750 rpm base speed; infinitely variable
up to a maximum of:
Maximum surface speed:
835/1455/3060 rpm
8000 ft/min
PRG's dynamic balancing machine is designed to accommodate units of many dimensions, compositions and
weights — from small up to 160,000 lbs.
HIGHLIGHTED CASE STUDIES
The Company
Alsco Metals Incorporated ...
The Problem
A variation in process reduced plant efficiency ...
